package com.p04.study;

/**
 * 车类
 */
public abstract class Car {

    private int num;
    /**
     * 调节引擎
     */
    public abstract  void turnupEngine();

    /**
     * 换机油
     */
    public abstract void changeOil();

    /**
     * 汽车的保养
     */
    public abstract void maintenance();

    public void test(){
        System.out.println("打印test");
    }

}
